Worldwide, there are 107 boy babies born for every 100 girl babies.

This slightly skewed ratio is partly due to sex-selective abortion and the killing of female infants when males are more desired. Boys have a higher death rate, both as infants and adults, so the ratio later in life is slightly different. Specifically, for every 1,000 people in the world, 504 are men (50.4%) and 496 are women (49.6%).

According to statistics, Hispanic and Black teenagers in the United States have higher rates of teen pregnancies compared to White teenagers. However, it's important to remember that teen pregnancy rates vary by region and are influenced by various social and economic factors.

Some animals such as male horses have things between their legs that mean it's a boy girls don't

at 10 1/2 weeks a babies heartbeat should be between 140 and 150

Not all pregnancies are the same, i should know, I'm having my 6th one. From what i was told with my pregnancies, was that for boys, the normal beat would be between 130/139 and for girls 140/150. If it's much over or much under, only your ob doctor can tell you if it's ok or not. I'm 30 weeks now and my doctor told me the beat was 152, i was worried because my other daughter didn't have it that high and on top of that, he told me i was having a boy. My ob says that as long as the heart beat stays between 120 to 160, it should be fine. Again, it all depends on your doctor. This early in the pregnancy, i definitely would suggest to get a pro's opinion.

ACOG expanded their guidelines to include heartbeats from 110-160 as a normal range during pregnancy.

Although, as you get closer to term, more important factors contribute to good fetal heart tones (FHTs) than just heart rate including variability, absence of decels, presence of accels, and a reactive strip.

It is impossible to tell by rate of the heartbeat. Anyone who tries to tell you otherwise is speaking old wives tales. The above answerer said that you can tell for sure by an ultrasound. You cannot. Sometimes the baby keeps its legs together or is at a difficult angle and you sonographer can't see, and sometimes it is just impossible to tell.

darker nipples

Yes. Sperm carry either an X or a Y chromosome. The eggs from a female's ovaries is always X.

If the sperm has an X chromosome, the baby will be female.

If the sperm has a Y chromosome, the baby will be male.

This is normally done at a scan around 16 to 22 weeks along depending on your dr.

it could be w=either parent because the female has XX and the male has XY, in which both the X's could come form the mom or one could come from the father. The Y could also include to make a male. So it really is both and either parent.

if you gain weight it is definitely a girl if you are loosing weight it is a boy

There are no specific signs. all you can know about it is that your doctor tells you.

no.

well after the baby comes out, the doctors will check where their privates are, (if you don't know what i mean, i mean where they pee from). boys have different privates from girls.

No. The person who choses the gender of the baby is the guy. Why? Because it depends on how much sperms the male puts in the female,if the male puts alot it will come out as a girl and if it's alittle bit of sperms the sex of the baby will be a boy.

It's been 100% right for everyone

at least 7 mm

The baby grows in the mother's womb for nine months before it is ready to be born.

This ovulation calender will help: http://www.ovulation-calendar.com/hlp-c04-conceiving-boy.html

Y sperm which produce boys are faster but weaker than X sperm which produce girls. Have lots of sex in the week after your period which will put sperm production into overdrive and more male sperm are produced. Then do not have intercourse again until just after ovulation, (though the man can masturbate to orgasm). There will be more male sperm than female and they will get to the ovum first as it is travelling down the Fallopian tubes.

This is not a gurantee, I have boy/girl twins.